Tablet-making machine.



No. 889,157. 'PATENTED 1130.25, 1906.

G. 0. KLIEWBR.

TABLET MAKING MACHINE. APPLICATION TILED AUG. 3, 1904. mannwnn' 001:.29, 1000.

2 SHEIiTS-BEBET 1.

WITH (55w Gerhard CfKli 5 C D D m N E T A P. mm B W E I L K C G 7 5. J 93 oo 0 TABLET MAKIN MACHINE. APPLIOATION FILED AUG.8, 1'904. RENEWEDOCT. 29, 1908.

2 SHEETS-SHEET 2.

aerhard .Kii gWPL- @7 W115 eays: 4.4. a/M- all whom; it mdy concern." if

I Be it known that-I, GERHARD O. KLIEWER, a c1t1zen' of the UnitedStates, and a resident chines, of which-the following, whentakenin of 1Illinois,

and

oii'irion.

"GER HARD e. 'LIEWER, or CHICAGO, IILLINIOIYS.IAI.

x TA BLETeMA KlNG MACl-llNE of Chicago, in. the county of-Cook and StateI haveinvented certain new and useful Improvements in Tablet-MakingMaconnection with the drawings v accompanying formlng a part hereof, s

l a full and com- P d'e'rstand} make, and use the same.

a This invention relates to tablet-making 1 machines, whereby'a'largenumber of tablets of a given size and sha e are desired to be made andthe object 'thisinvention-is to I obtain a tabletemaking machine bymeans of which a large number of tablets of 'a deter.-

mined size and density may be made, and;

further, to obtain a machine which can be readily and quickly changedwhen makin a tablet of one size and shape to make a tab et density maybe quick I I A further object of the invention is to ob- In the drawingshereinbeforereferred to,

of a different size and shape or of adifierentsize and by means of whichwhen the. inac hine is changed a large number of tablets of' the newsize and shape anal of the desired y ma e".

tain a tablet-making machine which is not liable to get; out of order,which is not. expensive in construction, and which is dura-.

" Figure 1 is a-front elevation of a tablet-makmg machine embodying thisinvention; Fig.

'2 1s. a vertical sectional viewof a cylinder provided'withannular,flanges, showing one each of an up er and a lower series ofplun-' gers msuch anges;

Fig. 3 is a top lan view of alittl'e more than one-half of the ase 1 ofthe machine. Fig. 4 is a vertical sectional view of the base of themachine on line4 4., of

Fig; 3 viewed inthedirection indicated by the arrows.

tion of a horizontal bar which'is mounted so as to-be vertically movableon the vertical standards of the machine. ."Fig. 6 is a top Ian-view ofthe section of the horizontal. Bar which is illustrated inFig. and Fig.7 'isa perspective of an adjustable thimble and fln'ut, shown alsoinment in the machine embodying this inven- Fig. 2, forming an eletioniFig. 8. is an-elevatig of a 'part of one of the upper series of p111Specification of Letters l atent. I

ete description, sufficient to enable those skilled in the art to whichit: pertains to un- "the base A.

sided with hole 6 through I cal shaft Gextends, and with hole 0-,through 0 5 and'6 and is firm Fig. 5 is an elevation of a se'c-.r

.if desired. ..The upper end'of the sha 'ers' wlth aQollar.

l aned 1m. 25, '1906.

.Application medi ms, 1904. aenewea'ombm-"zsyi906. SerialNo. 241.130,]

"and spring thereon to yieldingIy 'inaintain 5 5 the plunger m aretracted position.

A reference-letter appliedto designate a given art is used-toindicatesuch part througl iout the several figures 'ofthie 'draW- ings whereverthe same a pears.- i A is the. base of the maciime and com rises thesquare portion a andthe cylindrica portiona/f- 3B are verticalstandard'stwhich are ref I erably round) -;fitte'd-firmly in holes-B" f*of- 6 5 (SeeFigs. 3 and4 I C isfa horizontal. table mounted to be movedvertically on standards'B Band'ar ranged to be secured by means bftheset-':

screws G C? in an adjusted position. (See Dis a horizontal bar mountedon the standards B B by means of holes in the ends D, thereoffittmg overthe standards B B. 'Such horizontal bar D may be moved vertically to anadjusted position and there secured by the set-screws D D. E is ahorizontal bar also mounted on the vertical standards B B. The ends E EofbarE are provided with I holesE E (see Figs. 5 and 6,) respectively,

. such holes fitting over the verticalstandards B Bin a' inanner topermit vertical 'move-, ment of the bar on the standards. I F F arecompression-wheels: rotatabl I mounted on horizontal barE. This bar E ispreferably built up (in the in Figs. 5 and 6) of the part e, the rodsor. axles e e, and endsE E. The part e is prowhieh thevertiwhich anadjusting bolt, hereinafter de scribed, extends. The axle or rod eextends into the part e and into the part.E in the manner indicated bythe dotted lines in F i y secured in place, as, y the rivets e e v Thevertical shaft'G may be provided with the ball-bearings g at the lowerend th e03 extends through-the horizontal bars D and E we and rotatestherein. I V a H is a cylinder on shaft G-.. I I \The shaft G isprovided with the; shoulder g thereon, (see Flg. 2,) and the cylinder His I 1 provided wi-tha hub it, having a hole therein fitting on thesmaller part of the vertical 4 shaft G, so thatsuch-cylin'der rests onthe shoulder g'-,-as is illustrated in 2 .0% the manner illustrated Idrawings. Cylinder H is secured rigidly to the shaft G to turntherewith, as by the feather I. (See Fig. 2.) Cylinder H may be removedfrom vertical shaft G whenever de- 5 sired by removing the horizontalbars D E from vertical standards B B and removing the feather or splineI from shaft G, and such cylinder may be replaced by another eylinder,(a duplicate thereof,) in which the dies about to be described are of adifferent size or shape from those on the first-named cylinder.

is an annular flange which may be and preferably integral with cylinderH. h h and k h areannul'ar flanges fitted rigidly onto the c liind-er H.(See Fig. 2.)

' J J, J J and J respectively, are holes in the annular flanges ofcylinder H. K K are plungers in holes J J, and K K are lungersin holes JJ Pl-ungers K K are ereina-fter referred to as the lower series ofplungers-, and plungers K K are here inailter referred to as the u perseries of 1;. plungers. In the several p ungersof the ower series thereare placed punches L L, and in the severaitilungers of the up er seriesthere are place the dies L L. The severa-l dies are firmly secured inplace, as by the set-screws Z Z.

M is a die in one of the holes J J of flange h. 0 m is thehole in die M.(See Fig. 2.)

When the several parts of the machine are all assembled, there is a dieM ineach one of the holes J, and a lunger containing a unoh is mountedin eac' set of holes J J an J J 3 5 The lower series of punches L L areset in the lower series of plungers K K, so as to be in the die M (seeFig. 3) when at the lowest possible position of such punches, and thethickness of the tablet compressed by this 40 machine is determined bythe position of the upper end of such punches L L when in such lowestpossible position, and hence in order to make tablets of differentthickness in the machine 1? make the position of theplungers K Kadjustable longitudinally, asby means of a thimble N, Figs. 2 and 7,mounted there: on and providedwith screw-threadsn therein. Screw-threadsn in the thimble N intermesh with screw-threads n on the plungers K. Nis a slot in thimble N. This slot when used is made before thescrew-threads n are cut in the thimble, and thereby such screwthreadsfit sufficiently close to the plunger K to prevent the same from turningfrom an adjusted position.

N Fig. 2, is a spring on plunger K. The upper end of spring N abutsagainst the under side of the upper one of the annular rings k and thelower end of such spring rests on the shoulder n obtained by placing thehead a on thimb-le N. The spring bl on plunger K tends to yieldinglyhold such plunger down, so that the head a of the thimble N thereonrests on the upper face of the lower 6 5 one of the annular flanges h.

N is aws' ring on plunger K, tending to hold such p unger up-that is, ina retracted position-in the same manner as spring N tends to yieldinglyhold the plunger K down in a retracted position.

N is a collar on the plunger K, correspending in function with thethimble N on plunger K, and N is a set-screw by means of which collar Nis maintained in an adjusted position. v

The quantity of material deposited in the hole m of the die M isdetermined, as hereinbefore stated, by the adjustment of plum er K,which is obtained by thimble N', as escribed, and to obtain the movementto plunger K and die L, mounted therein, required to give the densityrequired to the tablet made in such die M, I provide the adjustments andconnections between the bars D andE, which I will now describe.

0 O are set bolts or screws extending loosely through bar D and providedwith screw-threads O at the lower end thereof, intermashing withcorresponding screwthreads in hole 0 of bar E. I

P P are nuts on bolts 0 0, such nuts being provided with threads whichintermeshwith threads 0 O, and Q Q are springs on bolts or screws 0 O.

Bar D is secured rigidly on standards B B by means of set-screws l)" D".Adjustingbolts 0 O are then turned and bar E thereby forced down, sothat the wheels F F depress the several plungers K K passing thereunderto give the desired thickness to the tablet made in hole m of die M. Thebar E is thus yieldingly held in its adjusted position by means of thelock-nuts P P and springs Q Q- that is, the tendency of the bar E to beforced up by the passing of the several plungers K K thereunder in therevolution of the shafts G and cylinder H is opposed by the springs QQand it thus occurs that in order to obtain a given density to thetablet made in hole 'm. a determined adjustment of the locknuts P P onbolts(.) 0 relative to the springs Q-Q is required. The more the nuts PP are forced against such springs Q Q the greater is the resistanceoffered by such springs to any upwardunovement of the horizontal bar E.

R is a thin cylindrical covering-say of sheet metal-over the annularflanges h h and h h, respectively, merely to prevent dust settling onthe respective plungers in such flanges.

To force the plungers K K up after a tablet has been made in die M, thewheels S S, Fig. 1, are provided. The several plungers are raised asthey are carried over such wheels by the rotation of the cylinder H.

To supply material from which tablets are to be made to the hole 'm, ofdie M, I provide a hopper T, with pipe U depending there-- from and theextension V at the lower end thereof. Such extension V rests on table 0.

The several dies L L ass over the extension V in the revolution the c.linder H, as is shown in Fi 1, .and the ho e m is filled by the materiacontained in hopper T, depending pipe U, and extension V, and when therespective dies M come out from under the extension V they are filledwith material which is compressed when the punch L there over isdepressed by the plunger in which such punch is held, passing under theadjacent one of the depressing-wheels F F.

In this machine there are made at each revolution of the cylinder H twotablets for each pair of plungers (an upper and a lower one) in therespective annular rings on such cylindcr,;one of such tablets beingmade as the upper plunger'of apair passes under one of the wheels E Eand the other of such tablets made as such plunger passes under the innumber of times in therevolution of the cy inder, such mechanism toforce the plungers of the upper series down consisting of a orizontalbar vertically movable on the vertical standards, wheels rotatablymounted 'onthe horizontal bar in the path of move-q ment of the upperends of such plungers, an

additional horizontal bar removably secured on the vertical standardsand an adjustable yielding connection'between the horizontal arssubstantially as described.

2. The combination of a base, vertical standards on the base, arotatablymounted vertical shaft provided with a shoulder'thereon, acylinder provided with annular flanges removably placed on the shaft torest on the shoulder and to turn with such shaft, an upper and a lowerseries of Ion tudinally-movable plungers mounted on t e annular flanges,

means to force the 1plungers ofthe-lower series up a plurality 0 timesat each revolution of the shaft "and cylinder and mechanism to force theplungers of the upper series down a corresponding number of times in therevolution of the shaft and cylinder, such mechanismto force theplungers of the upper series down'consisting of a horizontal barvertically movable on the vertical standards wheels rotatably mounted onthe horizontal bar in the path of movement of the upper ends of theplungers, an additional horizontal bar removably secured on the verticalstandards, and an adjustable yielding connection between the horizontalbars; substantially asdescribed.

3. In a machine vided withlongitudina y-movable plungers mounted on arotatable cylinder, the combifor lpressing tablets pronation of meansto' force the plungers of'a lower series up a plurality of timesateachrevolution of the cylinder with means to force the plungers of an upperseriesdown a corresponding number of times in the revolution of suchcylinder, the means applied to force the plungers of the upper seriesdown comprising a horizontal bar, wheels mounted on the horizontal barin the ath'of movement of the upper ends of t e plungers of such upperseries, a second horizontal bar,

means to secure the second-named bar in an adjusted position, and anadjustable yieldin r connection between the horizontal bars;substantially as described.

I 4. The combination of vertical standards, a vertical shaft, a cylinderon the shaft,

flanges on the cylinder, plungersin theflan es, means-to move theplungers longitfl dina 1y a plurality of times at each revolu tion ofthe cylinder,ho1izontal beams, one thereof rigidly secured to thevertical standards and one thereof vertically movable on such standards,bolts 'extendin through the rigidly-attached -horizontal eam,screwthreads on the bolts and screw-threads interv meshing therewith inholes in the verticallymovable beam, springs on the bolts, means to varythe tension of the springs, and wheels rotatably mounted on theverticallymov-' able beam to engage with the upper series of plungerssubstantially as'described. 5. In a tablet-making machine a consistingof a longitudmally-movab art, a thimble a 'ustably secured on sue Bodypart, such t imble provided with a shoulder thereon, and a spring on thebolt,

in combination with a plurality of annularrings against one of whichrings the thimble is forced by one end of the spring coming in contactwith the other ring, and a rotata lymounted cylinder on which the ringsare mounted; substantially as described.

GERHARD C. KLIEWER. In presence of LEON J. CAMPBELL, CrrARLEs TURNERBROWN.

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